Solar eclipse of August 11, 2018

Solar eclipse of August 11, 2018
Solar eclipse of August 11, 2018
	From Huittinen, Finland
	Map
Type of eclipse
Nature	Partial
Gamma	1.1476
Magnitude	0.7368
Maximum eclipse
Coordinates	70°24′N 174°30′E / 70.4°N 174.5°E
Times (UTC)
Greatest eclipse	9:47:28
References
Saros	155 (6 of 71)
Catalog # (SE5000)	9549

A partial solar eclipse occurred at the Moon's ascending node of orbit on Saturday, August 11, 2018,^[1]^[2] with a magnitude of 0.7368. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of the Sun for a viewer on Earth. A partial solar eclipse occurs in the polar regions of the Earth when the center of the Moon's shadow misses the Earth. The eclipse was visible in the north of North America, Greenland, Northern Europe, and northeastern Asia.

Visibility[edit]

The maximal phase of the partial eclipse was recorded in the East Siberian Sea, near Wrangel Island.

The eclipse was observed in Canada, Greenland, Scotland, most of the Nordic countries (Iceland, Norway, Sweden, Finland), Estonia, Latvia, practically throughout Russia (except for places southwest of the line roughly passing through Pskov, Moscow and Penza, and the most eastern places of the Far East), in Kazakhstan, Kyrgyzstan, Mongolia and China. During sunset, the eclipse was observed in North and South Korea.

Gallery[edit]

Moscow, Russia, 9:40 UTC
Baley, Russia, 10:24 UTC

Related eclipses[edit]

Solar eclipses of 2015–2018[edit]

This eclipse is a member of a semester series. An eclipse in a semester series of solar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating nodes of the Moon's orbit.^[3]

The partial solar eclipse on July 13, 2018 occurs in the next lunar year eclipse set.

Solar eclipse series sets from 2015 to 2018
Descending node			Ascending node
Saros	Map	Gamma	Saros	Map	Gamma
120 Totality in Longyearbyen, Svalbard	March 20, 2015 Total	0.94536	125 Solar Dynamics Observatory	September 13, 2015 Partial	−1.10039
130 Balikpapan, Indonesia	March 9, 2016 Total	0.26092	135 Annularity in L'Étang-Salé, Réunion	September 1, 2016 Annular	−0.33301
140 Partial from Buenos Aires, Argentina	February 26, 2017 Annular	−0.45780	145 Totality in Madras, OR, USA	August 21, 2017 Total	0.43671
150 Partial in Olivos, Buenos Aires, Argentina	February 15, 2018 Partial	−1.21163	155 Partial in Huittinen, Finland	August 11, 2018 Partial	1.14758

Saros 155[edit]

This eclipse is a part of Saros series 155, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on June 17, 1928. It contains total eclipses from September 12, 2072 through August 30, 2649; hybrid eclipses from September 10, 2667 through October 2, 2703; and annular eclipses from October 13, 2721 through May 8, 3064. The series ends at member 71 as a partial eclipse on July 24, 3190. Its eclipses are tabulated in three columns; every third eclipse in the same column is one exeligmos apart, so they all cast shadows over approximately the same parts of the Earth.

The longest duration of totality will be produced by member 14 at 4 minutes, 5 seconds on November 6, 2162, and the longest duration of annularity will be produced by member 63 at 5 minutes, 31 seconds on April 28, 3046. All eclipses in this series occur at the Moon’s ascending node of orbit.^[4]

Series members 1–16 occur between 1928 and 2200:
1	2	3
June 17, 1928	June 29, 1946	July 9, 1964
4	5	6
July 20, 1982	July 31, 2000	August 11, 2018
7	8	9
August 21, 2036	September 2, 2054	September 12, 2072
10	11	12
September 23, 2090	October 5, 2108	October 16, 2126
13	14	15
October 26, 2144	November 7, 2162	November 17, 2180
16
November 28, 2198

Metonic series[edit]

The metonic series repeats eclipses every 19 years (6939.69 days), lasting about 5 cycles. Eclipses occur in nearly the same calendar date. In addition, the octon subseries repeats 1/5 of that or every 3.8 years (1387.94 days). All eclipses in this table occur at the Moon's ascending node.

22 eclipse events between January 5, 1935 and August 11, 2018
January 4-5	October 23-24	August 10-12	May 30-31	March 18-19
111	113	115	117	119
January 5, 1935		August 12, 1942	May 30, 1946	March 18, 1950
121	123	125	127	129
January 5, 1954	October 23, 1957	August 11, 1961	May 30, 1965	March 18, 1969
131	133	135	137	139
January 4, 1973	October 23, 1976	August 10, 1980	May 30, 1984	March 18, 1988
141	143	145	147	149
January 4, 1992	October 24, 1995	August 11, 1999	May 31, 2003	March 19, 2007
151	153	155
January 4, 2011	October 23, 2014	August 11, 2018